Display screen or portion thereof with icon



FIG. 1 is a front elevational view of a display screen or portion thereof with icon; and,

FIG. 2 is a front elevational view of a second embodiment thereof.

The broken line showing of the display screen or portion thereof forms no part of the claimed design. The broken line showing of the electronic device in FIG. 1 and the alternate electronic device in FIG. 2 forms no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 